Question about Dell E173FP 17" LCD Flat Panel Monitor
I have had the same problem as others seem to have had with the dell flat panel. After leaving the screen on for some time, the monitor brightens for a moment, then goes black, while the green light stays on. When I reboot, it works again for some time, or if I remove the cable for a few minutes and plug it back in (with monitor turned off) it will come back on...only to repeat the black screen. I have changed the power features, screen resolution, downloaded updated drivers from dell, and viewed dells troubleshooting advice on the monitor cd that came with the computer. Nothing directly advises on this problem, but I have read here and in other online message boards the exact same problem. Anyone able to fix this?
I know that this is going to sound crazy because it sounded crazy to me...but my monitor was doing the exact same thing and it was really getting to me, so I came up with an idea...somewhere in my brain I decided that turning down the brightness would help...so I turned the brightness down to about 57, and I have not had a problem since. I know all of these problems were posted a long time ago...but I hope that this helps someone out and saves them some money. I have a Dell LCD monitor and it fixed the problem right away.
Posted on Apr 29, 2007
Many flat panel screens have fault detection circuits that shut down the circuits. Most common is an imbalance in the inverter outputs due to failing bulbs or more frequently failure of one of the inverter branch circuits. Bad solder connections,weak capacitors, blown fuses, or shorted transistors can cause this problem. Replace the inverter circuit first, bulbs second and video circuit next.
Posted on Aug 15, 2006
OK PEOPLE I GOT THE SOLUTION TO THE MAG INNOVISION LT916S GOING BLACK AFTER ANY LENGTH OF TIME BEING ON!!! I JUST REPAIRED MINE TODAY! THE PROBLEM IS THE CAPACITOR BANK IN THE POWER SUPPLY PART THERE ARE 6 CAPACITORS I HAD A FEW LEAKY ONES "NOT GOOD" THE CAPACITOR SPECS ARE AS FOLLOWS 470UF 25V 105 DEGREES C MEANING 470 MICRO FARAD/25 VOLTS I HAD A VERY HARD TIME FINDING THE 25 VOLT ONES SO I WENT WITH 470UF/35V 85 DEGREES C THEY MIGHT NOT LAST AS LONG AS THE OTHERS DUE TO THE TEMP RATING HOWEVER, IM THINKING SINCE THEY CAN HANDLE UP TO 35 VOLTS IT SHOULD EVEN OUT AND HEY, ITS WORKING SO FAR SO GOOD!! THE CAPACITORS ARE FROM UNDER A DOLLAR A PIECE TO A COUPLE BUCKS EACH. THE CAPACITORS HAVE A BOLD LINE RUNNING UP ON ONE SIDE INDICATING THE POLARITY. BOLD LINE SIDE IS "-" SIDE WITHOUT BOLD LINE ITS "+" THE POWER SUPPLY BOARD HAS THE POLARITYS STAMPED ON THE BOARD ITSELF UNDER EACH CAPACITOR. EASY 30 MINUTE FIX IF YOU ARE LEARY ABOUT SOILDERING, FIND A FRIEND THAT KNOWS HOW TO. ITS REALLY NOT THAT HARD THOUGH AND YOULL HAVE SOME DECENT ROOM TO WORK WITH. I PROMISE WHEN YOU OPEN IT UP YOU WILL ALMOST CERTAINLY SEE AT LEAST 4 OF THE 6 CAPACITORS BULDGING AT THE TOPS MAYBE EVEN LEAKING BROWNISH STUFF. DO YOURSELF A FAVOR THOUGH AND REPLACE ALL OF THEM WHILE YOUR IN THERE "THE SIX BIGGER ONES ONLY" IF ANY OF YOU NEED FURTHER HELP OR ANY OTHER QUESTIONS ABOUT THIS PROJECT PLEASE FEEL FREE TO EMAIL ME AT [email protected] I DAMN NEAR WENT CRAZY TRYING TO FIND A SOLUTION ON HOW TO FIX THIS THING SINCE I SPENT OVER 300 BUCKS FOR IT NEW. AND IM BY NO MEANS A EXPERT WHEN IT COMES TO THIS STUFF BUT I DO KNOW A FEW THINGS. AS IM SURE MOST OF YOU DO. TAKE CARE YOU ALL AND THANKS TO THE GY WHO MENTIONED SOMETHING ABOUT CAPACITORS BEING BAD IN HIS!
Posted on Aug 21, 2007
I'm having the same exact problem...happened after a power outtage at my residence last weekend. I've talked to dell tech support and they suggested many things but none yet to help my situation. They sent me a replacement monitor but it has the same problem so then I thought it either had to be the video drivers or the connection so I uninstalled and reinstalled drivers for both my monitor and graphics card then updated them to the latest releases and no such luck...still did the same thing...so my last try was to switch surge protectors and it still is doing it...i'm really at the end of my rope...if anybody can help it would be greatly appreciated thanks
Posted on Sep 05, 2006
green light on but screen goes black
Try setting brightness less than 57%
It fixed mine
Posted on Dec 05, 2009
I have the same problem with the Mag 17" LCD. noone, How do I go about the process of replacing the circuits?
Posted on Sep 07, 2006
I recently decided to get rid of a couple of excess monitors one of which was a Dell E172FPt.
To check it was still okay I connected it up to my system only to find I had the same problem as many others whereby it started then after a couple of seconds the screen went black but the on/off switch stayed green. My other monitor worked okay when tested.
Following the advice on many forums I stripped the monitor but could find no sign of any components having blown or overheated that would indicate where the problem lay.
However on one site the guy said to try uninstalling the graphics adapter and then re-start and let your computer search and re-install the drivers for the adapter to see if it was a software rather than hardware problem. Low and behold when I did the screen worked flawlessly and still is.
I would add that I had recently run a programme that had automatically updated all my drivers and afterwards I had found an Nvidia programme in 'Control Panel' that had not been there before. After carrying out this guys recommendations this programme had disappeared.
It may not work for every case but try the software option first before you start stripping the monitor and replacing expensive parts you might not need.
Posted on Feb 07, 2010
CHANGE YOUR SURGE PROTECTOR
I had the same problem of monitor turning off while monitor's power was on. i read somewhere online that changing the surge protector id the trick and sure enough it did. the power cord that goes to the monitor and the power cord that goes to the computer both to be replaced into a new surge protector.
solved in 2 seconds
Posted on Apr 25, 2008
Thank you BNUTZBCRAZY you were absolutely right.
The solution to the problem of my monitor going blank after a few seconds was as he predicted - one of the capacitors in the power supply had gone 'leakey' and could be identified by its 'bulge'. I replaced the faulty item (100uf) with another of approximate value and problem solved. By the way, the voltage value of the replacement capacitor is of no importance as long as it is ABOVE the value stated on the original.
Again, many thanks to BNUTZBCRAZY!!!!
Posted on Jul 04, 2010
BNUTZBCRAZY is totally 100% right, his solution helped me fix a Norcent 17" LCD monitor. I opened it up and sure enough there was the 470uF 25V 105C capacitor with the bulging top. This monitor, and another of mine, just have one capacitor like that but exact same specs. And much like BNUTZBCRAZY, I was able to find a 470uF 35V 85C capacitor easily at my local Radio Shack for $1.39. The replacement had axial terminals (one out each end) but I was able to bend them in a way that they fit the original spot easily, just make absolutely sure to get the polarity correct or you will blow your capacitor and possibly cause more severe damage. There is a Wikipedia entry on electrolytic capacitors, look over its polarity section if you need any help matching up your cap to the symbol on your circuit board. Better yet, take careful note of the polarity of the existing one before you remove it, and then double check that with all other symbols and indicator marks. Big ups to BNUTZBCRAZY.
Posted on Jul 14, 2008
Yes, its the barrel shaped components on the power/inverter board. The tops have a cross stamped in them so it bulges/blows before the cap actually pops, shooting the top into the back of the LCD. I had one pop in another device and it sounded like a firecracker! If they are bulging or starting to show a domed top, replace them. There was a huge rash of these sub-par caps manufatured in the late 90's and have found themselves into many new devices.Planned obsolescence? These smooth out DC power and if they quit, they either open the circuit or foul up the DC power so bad that the inverter shuts down and never lights the lamps. At least look into it, they are cheap and pretty easy to replace. Just desolder, **** up the solder in the hole, put in the new ones and resolder.
Posted on Apr 07, 2008
Mine does this stuff to and it is a gateway monitor is it easier to fix it or should I just get a new one
Posted on Nov 13, 2008
The actual answer to this problem is really quite simple, get a new video card or don't use the dvi output on the card. Several manufactures were known to make cards dual headed that were not true dual heads and therefore the dvi output is not a true dvi output and the monitor will suspend or appear to suspend at random intervals because of the lack of needed connection of the dvi. i have also had this issue and buying a better make card solved it.
Posted on Apr 30, 2010
Check for bloated capacitors
Posted on Aug 04, 2020
Change the monitor to confirm which item cause error ,monitor or CPU, if after chaining the monitor the problem is solved you have to repair your monitor.
Posted on Jun 23, 2020
I was able to do some resurch because of my owen monitor,Try putting a exchanging video cable first.This will tell if your cable is good.If it passes,Next put the monitor on a diffrent computer that you know that the monitor of thar computer is working .If at this point your monitor is still acting up with the blank screen .the problem then is in the internal component of the monitor.HP flat screen monitor
have the power supply intergraded.
Posted on Nov 13, 2008
I have a Dell 17" with the same problem.... All caps on the supply board look good (flat top). The screen has 4 long and thin fluorescent tubes two on the top and the other two on the bottom. I noticed that only one of the 4 tubes was turning on when powered. I switched the connectors thus testing all 4 tubes and they work (for a few seconds if connected where the "good" one was). There's obviously something wrong with the high voltage circuits on the board. As noone suggested, there are protection circuits on the board (there's an TL1451ACN on the board which apparently controls the oscillators). Does anyone has a schematic for this board. It says "BENQ" on it....
Posted on Sep 05, 2008
I opened my flat panel monitor and noticed the Rectifier's leads were discolored and black-ish I googled the little numbers on the diod and discoveded it was called a rectifier. I found one very similar in Amps and out put volts to the one I had at the local RadioShack. This didnt break the monitor but it still had the same problem, power on with info on the screen lite up and then going black with the green light still on, I have come to the conclusion that there is indeed a problem with the power supply to the monitor. I found a web stie called hackaday and a person had the almost identical problem with an eriely similar monitor. they took the power supply out of the monitor and connected an old tower power suppy to the wall mounts on the back of the monitor. there are eight prognes that need to be connected and you can take care of them with two leads from the tower power suppy. I searched on E-bay for an Identical monitor with a cracked LCD to simply take em both apart and swap the good parts. I noticed that people were selling the very same monitor with the same problem I was having. they simply used bad parts in makeing these monitors.
Posted on Jun 04, 2008
I think that I might have figured it out. I was having the same problem with my hp flat panal monitor. First I pugged it in. It wouldnt let me go to the monitor menue because it sayed "input source out of range" I figured out that I had to change my resolution, but I thought there had to be something still wrong with it, that was to simple. It let me into the motitor setting after I canged the reslution on it. I went through every menue and submenue that was on there. I found one called management, went in that and went to sleep timer, the sleep timer time sayed 00:50 and it was turned on. It must be like that on default or something, I never turned it on. I turned it off and my monitor has been working for about an hour now without turning off. Usually it would last about 10 to 20 minutes. Just try that it might work. I have had this monitor growing dust on it for over a year. Im happy Finally got to motivation to try and figure it out.
Posted on Apr 10, 2008
I have an ACER AL1916W LCD Monitor--- I believe the power supply board is bad-- Im looking to9 indeitfy a specific chip...it's an P605 BZ6L2N. I can't find info on it anywhere... Can anyboby help?? THe Power supply board is
Posted on Apr 09, 2008
IT IS THE CAPACITORS. Go to Radio shack and get the replacements for $10. The replacement is not difficult, just be sure to get a roll of the desoldering braid to remove the bad capacitors. Thank you so much for posting the fix. I have 2 of these monitors, and both are now up and running again!!!
Posted on Oct 20, 2007
If you have another LCD monitor around that works with similar specs on the power adapter, you may also want to try that too (FIRST MAKE SURE VOLTS, AMPS, and POLARITY ARE IDENTICAL). If volts or amps are within .5 of the other, that should probably be okay (it was for me). Bottom line, at least so far, when I had the 2 second visibility problem (after which it would turn off), trying this other adapter seemed to fix it! Strangely enough, when I went back to the first adapter right after the monitor was also still okay for the time being. You can also try brigtness down to 40-45 just to see if it helps. Still trying to determine how permanent a fix this will be for now, but at least it's something else for you all to try if you have the opportunity.
Posted on Jun 24, 2007
I was having the same problem, where my display screen would go black. If I was typing when it went black, it would continue to type in or change web pages that I might click on for the few short seconds that it displayed the lighted screen. I figured then that it was responding to my computer even though the screen was black. I tried everything that was suggested to me, but of no help. It would stay on for a certain period of time, then black-out. Unless I turned off my computer and started it up again, it would not stay lit. Someone suggested that it was my video card that might be bad. Before I checked about that, I tried going to my video card (NVIDIA GEForce 6150LF). I pulled it up and tried to update the driver for that. After I did the install for the update,it stayed lit, but then kept flickering (which it didn't seem to do before)I tried to update the driver for that again, and it came up that it would uninstall all the previous components that it needed to and then would update the driver. After I said yes to that, it updated it with SP26787 driver I guess. That is the number it said.....then the security system came up and said that it had updated the system. The screen kind of jumped and from then on it seems to work okay. I have used it quite a bit today for the first day, and it has not blacked out on me at all. It seems to have fixed the problem (cross my fingers). I have a MAG Innovision monitor only a couple of years old (19") and a HP Compaq tower and HP keyboard. I have Windows XP for my program. I don't know if this will help anyone out there that is having this problem, but I thought I would pass on what seems to work for me as of now. I was getting very frustrated with the situation. Good Luck Kathy
Posted on Jan 15, 2007
What are the numbers of the capacitors???
Posted on Oct 13, 2008
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